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Goodwill
 6 Months Ended
Jun. 30, 2023
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill Goodwill
The changes in the carrying amount of goodwill by reporting segment were as follows (in millions):
 ATMFBSTotal
Balance at December 31, 2022
$842.6 $4.6 $847.2 
Goodwill acquired during the period(1)
16.4 — 16.4 
Foreign currency translation11.2 0.1 11.3 
Balance at June 30, 2023
$870.2 $4.7 $874.9 
(1) Related to the measurement period adjustments for the Merger.

Accumulated impairment loss for the FBS segment was $2.7 million as of June 30, 2023 and December 31, 2022.